15 Best Solar Companies in Westminster, CA (2024 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Westminster based on:

  • Customer review scores
  • Service area for Westminster, CA
  • Company policies and services offered
  • Accreditations and certifications

Average Westminster homeowner saves $2,082/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated February 01, 2024

Why you can trust EcoWatch

We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Best Solar Companies in Westminster

Choosing the best solar panel installation company for your home is a huge decision, but it's one that can reap a lot of rewards in Westminster. Fortunately, there are lots of solar companies in Westminster due to encouraging government support and a growing green energy market.


In this article, we’ll help you find the best companies in your area.To get free quotes from the best solar companies in Westminster, you can click "get quote" below.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Regional Coverage

Momentum Solar

★★★★★
4.5

  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch Rankings for Solar Companies in Westminster

Best Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by Sun Solar-OC

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Maintenance
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Commercial Panels

Website: https://sunpowerbysunsolaroc.com/
Address: 4085 E La Palma Ave Suite B, Anaheim Hills, CA 92807
Phone: 9497349695
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunPower by True Power Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Maintenance
  • Service icon Residential Panels
  • Service icon Commercial Panels

Website: http://www.truepowersolar.com/
Address: 201 Clark Ave, Pomona, CA 91767
Phone: 7146768888
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.4/5

SunPower by Sea Bright Solar

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Prompt Service Delivery
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Financing Assistance
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Commercial Panels

Website: https://seabrightsolar.com/
Address: 1785 Industrial Park Ave Building A, Redlands, CA 92374
Phone: 9093475451
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

REPOWER OC

  • Pros icon Prompt Service Delivery
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Commercial Panels
  • Service icon Financing Assistance
  • Service icon EV Charger

Website: http://www.repoweroc.com/
Address: 2942 Century Pl Suite 760, Costa Mesa, CA 92626
Phone: 7144647721
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Solar Source

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Family-Operated Business
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Commercial Panels

Website: https://solarsourceinc.com/
Address: 2954 E 14th St, Long Beach, CA 90804
Phone: 5628525626
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

Vasco Solar

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Cleaning
  • Service icon Residential Panels
  • Service icon Commercial Panels
  • Service icon Skilled Repairs

Website: http://www.vascosolar.com/
Address: 17150 Newhope St #403, Fountain Valley, CA 92708
Phone: 7149688845
Outstanding Local Installer
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EcoWatch Rating

4.9/5

TENCO SOLAR

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Commercial Panels
  • Service icon Skilled Repairs
  • Service icon Permit Assistance
  • Service icon Solar Carports
  • Service icon Maintenance
  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Consultation

Website: https://tencosolar.net/
Address: 700 N Valley St Suite C, Anaheim, CA 92801
Phone: 8885076937
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

SunSolar U.S.

  • Pros icon Informative Resources
  • Pros icon Prompt Service Delivery
  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Permit Assistance
  • Service icon Commercial Panels

Website: http://sunsolarus.com/
Address: 16755 Von Karman Ave Suite 200, Irvine, CA 92606
Phone: 9492420088
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.7/5

Semper Solaris

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon Maintenance
  • Service icon Consultation
  • Service icon Residential Panels
  • Service icon Financing Assistance

Website: https://www.sempersolaris.com/locations/orange-county/
Address: 1701 E Edinger Ave Suite H1, Santa Ana, CA 92705
Phone: 7144972499
Outstanding Local Installer
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EcoWatch Rating

4.6/5

Nexus Energy Systems

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Skilled Repairs
  • Service icon Emergency Services
  • Service icon Commercial Panels
  • Service icon Maintenance
  • Service icon Residential Panels
  • Service icon Tesla Powerwall
  • Service icon Solar Panel Upgrades

Website: http://nexussolar.net/
Address: 2530 E Cerritos Ave, Anaheim, CA 92806
Phone: 8052433345
Outstanding Local Installer
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EcoWatch Rating

4.6/5

Infinity Solar

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Residential Panels
  • Service icon Tesla Powerwall
  • Service icon Commercial Panels
  • Service icon Consultation
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Financing Assistance

Website: https://www.infinitysolar.net/
Address: 749 N Main St, Orange, CA 92868
Phone: 7148808089
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.5/5

EcoSolar USA

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Commercial Panels
  • Service icon Consultation
  • Service icon Solar Carports
  • Service icon Battery Storage
  • Service icon Residential Panels
  • Service icon Maintenance

Website: https://www.ecosolarusa.com/
Address: 13880 Harbor Blvd Unit 6D, Garden Grove, CA 92843
Phone: 7142659077
Outstanding Local Installer
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EcoWatch Rating

4.5/5

Go Green Solar

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Off-Grid Solar Systems
  • Service icon Permit Assistance
  • Service icon Battery Storage
  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Maintenance

Website: https://www.gogreensolar.com/
Address: 1630 S Sunkist St ste e, Anaheim, CA 92806
Phone: 8667984435
Outstanding Local Installer
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EcoWatch Rating

4.2/5

Better Earth Solar

  • Pros icon Prompt Service Delivery
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Permit Assistance
  • Service icon Consultation
  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon Residential Panels

Website: http://betterearth.solar/
Address: 16720 Marquardt Ave, Cerritos, CA 90703
Phone: 8883739379
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.1/5

Southwest Sun Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Skilled Repairs
  • Service icon Residential Panels
  • Service icon Permit Assistance
  • Service icon Consultation
  • Service icon Commercial Panels

Website: http://southwestsunsolar.com/
Address: 13752 Harbor Blvd, Garden Grove, CA 92843
Phone: 7145823909

Methodology: How We Ranked the Best Solar Companies in Westminster

EcoWatch's solar experts analyzed each solar company in Westminster based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Westminster


Below are some the criteria we examined specifically for California solar companies

  • Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
  • Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
  • Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
  • Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
  • Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
  • Availability (10%): The bigger the service area, the higher the company will score.
  • Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
  • Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.

The Cost and Benefits of Solar in Westminster

For most homeowners, whether or not to invest in a solar energy system depends the most on the cost.The overall price and potential savings vary depending on a few key factors such as:

  • How much sunlight your roof gets: If your roof doesn’t see much direct sunlight, your solar system won’t be able to produce as much energy, which will give you lower savings on power bills than someone with a roof that gets plenty of sunlight.
  • Energy consumption: Solar may be too steep of an investment for families that don’t need a lot of energy each month.
  • Your current electric bills: Solar panels can dramatically decrease, or completely eradicate, your utility bills. In Westminster, you can save an average of $1,185 a month.
  • Choice of solar panels: The type of solar panels you need will affect your total cost. High-efficiency monocrystalline panels will cost more upfront but can also save you more money over the lifetime of your system. If space isn't a constraint for your project, you can opt for a higher number of more affordable panels.

Solar is a worthwhile investment for most homeowners. You can generate your own electricity instead of paying for it from the grid and benefit from solar incentives and rebates, all while helping the environment.

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Solar Incentives in Westminster

One of the great things about installing a solar panel system is receiving government incentives.State and city solar incentives depend on the location and, sometimes, utility company. A lot of states offer rebates for solar panels, in addition to the federal solar tax credit. Check out our article on solar incentives to see what incentives you can benefit from.

Environmental Impact of Switching to Solar in Westminster

If you want to add solar panels to your home, one of the major reasons why may be to lower your greenhouse gas emissions.You may be curious – how much do solar panels help the environment anyway? In Westminster, where the energy generation could be cleaner, going solar can have a big impact on the Earth since solar power is an abundant source of clean energy.After you go solar, your carbon emissions can be reduced by about 50 pounds a year. For people who are concerned about the environment, the upfront cost of solar is a small price to pay for offsetting your carbon emissions.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Regional Coverage

Momentum Solar

★★★★★
4.5

  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch's Westminster, CA Solar Company Rankings FAQs

What is the most reputable solar panel company in Westminster?

The best local solar company in Westminster is SunPower by Sun Solar-OC, with a rating of 3.00 stars.

What is the negative environmental impact of making solar panels?

Solar panels can be bad for the environment when manufacturers use toxic chemicals when they’re made. Chemicals can make solar panels difficult to recycle safely once they’ve reached the end of their lifespan. Solar panel manufacturing requires a lot of energy as well. The energy payback period is about 1 to 4 years.

Are solar panels worth it?

Solar panels can be a great investment for most homeowners, but frankly, they might not be worth it for everyone. If your home doesn't get enough sunlight or your energy bills are already reasonably low, solar panels might not be for you.

How much solar panel capacity do I need for my house?

Solar panel capacity is rated based on the amount of power they generate under standard testing conditions. Since each panel can usually produce about 250 to 400 watts per hour, the average house will need 20 to 35 panels.

Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.

Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.